Umbrella stand



FIG. 1 is a front elevational view of umbrella stand showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is an exploded perspective view in folded condition; and,

FIG. 9 is a perspective view in position of use, the broken lines indicate environmental structure and form no part of the claimed design. 

The ornamental design for an umbrella stand, as shown and described. 